Game uses the deck without Joker (51 cards). The purpose of the game is to remove all cards from game field. Build on the basic cells the combination of the cards by the following rules : the sum of the cards must be equal to 21. 2-10 count as they rank. Face cards count as 10. Aces count as 1 or 11. Tap "Take" button for apply combination. The 7 tableau columns are build down by alternate color. Only the correct sequence of cards can be moved between tableau columns. Empty tableau spaces cannot be filled. There is no redeal.

This image is a schematic representation, not a screenshot from the game. Screenshots are platform specific. You can see screenshots in the store.